Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Kenneth Lee Siehr, R.PH.

Pharmacist in Milwaukee, WI · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1114941861

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Registry record

Entity type Individual (Type 1)

Name Mr. Kenneth Lee Siehr

Credential R.PH.

Sex Male

Practice address 5000 W National Ave, Milwaukee, WI, 53295

Phone (414) 384-2000

Fax (414) 389-4276

Enumeration date Jul 26, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 9425-040 (WI) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Kenneth Siehr practice?

The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Kenneth Siehr?

The National Provider Identifier (NPI) for Kenneth Siehr is 1114941861, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.